CN110800166A - Board connector and connection structure of circuit board and board connector - Google Patents

Abstract

Realize thinning. The board connector (20) is provided with a connector housing (21) and a plurality of male terminal parts (30). an upper surface (10S); and a cover portion (23) that extends forward only from the upper edge portion (22U) and the left and right side edge portions (22S) of the outer peripheral edge portion of the terminal holding portion (22), A plurality of male terminal parts (30) are held in the terminal holding part (22) in a penetrating state, and the board connecting parts (33) of the plurality of male terminal parts (30) are connected to the circuit board (10) behind the terminal holding part (22) For connection, the tab-shaped connection parts (31) of the plurality of male terminal parts (30) are accommodated in the cover part (23). Since the cover portion (23) does not have a lower wall portion overlapping the upper surface (10S) of the circuit board (10), the thickness of the lower wall portion can be reduced.

Description

Board connector and connection structure of circuit board and board connector

technical field

The present invention relates to a board connector and a connection structure between a circuit board and the board connector.

Background technique

Patent Document 1 discloses a board connector mounted on a circuit board. The board connector includes a housing fixed to the circuit board in a state of being placed on the circuit board, and a plurality of terminal parts mounted on the housing. The housing includes a terminal holding portion for holding the terminal fittings in a penetrating state, and a cover portion extending forward from an outer peripheral edge of the terminal holding portion.

prior art literature

Patent Literature

Patent Document 1: Japanese Patent Laid-Open No. 2012-151046

SUMMARY OF THE INVENTION

The problem to be solved by the invention

The cover portion of the above-mentioned board connector has a rectangular cylindrical shape that is continuous over the entire circumference, and is placed on the upper surface of the circuit board so that the lower wall portion constituting the cover portion overlaps the upper surface of the circuit board. There is a problem that the height dimension from the surface to the upper wall portion of the cover portion becomes large.

The present invention has been made based on the above-mentioned circumstances, and aims at achieving thinning.

solutions to problems

A first aspect of the invention is characterized by comprising a connector housing and a plurality of male terminal parts,

The connector housing has: a terminal holding part fixed to the upper surface of the circuit board; and a cover part extending only from the upper edge part and the left and right side edge parts of the outer peripheral part of the terminal holding part to the side. the form extending forward,

The plurality of male terminal fittings are held in the terminal holding portion in a penetrating state, the substrate connecting portions of the plurality of male terminal fittings are connected to the circuit board behind the terminal holding portion, and the plurality of male terminals The tab-shaped connecting portion of the component is accommodated in the cover portion.

A second aspect of the invention is characterized by comprising a circuit board, a connector housing, and a plurality of male terminal parts,

The connector housing has: a terminal holding part fixed to the upper surface of the circuit board; and a cover part which is formed only from the upper edge part and the left and right side edges of the outer peripheral edge parts of the terminal holding part The shape of the part extending forward,

The plurality of male terminal fittings are held in the terminal holding portion in a penetrating state, the substrate connecting portions of the plurality of male terminal fittings are connected to the circuit board behind the terminal holding portion, and the plurality of male terminals The tab-shaped connecting portion of the component is accommodated in the cover portion.

Invention effect

According to the first and second aspects of the invention, since the cover portion does not have the lower wall portion overlapping the upper surface of the circuit board, the board connector can be reduced by the thickness of the lower wall portion.

Description of drawings

FIG. 1 is a front view showing a state in which the board connector of Example 1 is mounted on a circuit board.

2 is a rear view showing a state in which the board connector is attached to the circuit board.

FIG. 3 is a cross-sectional view taken along the line A-A in FIG. 1 .

FIG. 4 is a bottom view of the board connector.

FIG. 5 is a front view of the female connector.

FIG. 6 is a cross-sectional view taken along the line B-B in FIG. 5 .

7 is a side cross-sectional view of a state in which the board connector and the female connector are fitted.

8 is a front view showing a state in which the board connector of Example 2 is mounted on a circuit board.

FIG. 9 is a cross-sectional view taken along the line C-C in FIG. 8 .

FIG. 10 is a bottom view of the board connector.

11 is a side cross-sectional view of a state in which the board connector and the female connector are fitted.

Detailed ways

The first and second aspects of the invention may include a connecting portion that connects regions forward of the terminal holding portion among lower edge portions of a pair of left and right side wall portions constituting the cover portion. . According to this structure, the intensity|strength of a cover part can be improved, and the unwarranted deformation|transformation of the left-right side wall part in a left-right direction can be prevented.

According to the first and second aspects of the invention, the connection portion may be arranged at a front end portion of the cover portion. According to this configuration, since the lower end of the female connector abuts on the connecting portion when the female connector is started to be fitted to the cover portion, the female connector can be positioned vertically at the same time as the fitting is started.

According to the first and second aspects of the invention, the connection portion may be arranged in a forward region of the front end edge of the circuit board. According to this structure, it is not necessary to form the notch part for avoiding interference with a connection part in a circuit board.

According to the second aspect of the invention, the connection portion may be arranged so as to be in contact with or close to the front end edge of the circuit board from the front of the front end edge. According to this configuration, when the connector housing is fixed to the circuit board, the connector housing can be positioned in the front-rear direction by contacting the connecting portion with the front end edge of the circuit board.

<Example 1>

Hereinafter, Embodiment 1 embodying the present invention will be described with reference to FIGS. 1 to 7 . In addition, in the following description, regarding the front-back direction, the right side in FIGS. 3 , 4 , and 7 is defined as the front. With regard to the vertical direction, the directions shown in FIGS. 1 to 3 and 5 to 7 are defined as the upper and lower directions as they are.

The board connector 20 and the connection structure of the circuit board 10 and the board connector 20 of the first embodiment are used in a high-speed communication circuit of 100 Mbps to 1 Gbps in the Internet (registered trademark), and are mounted on the horizontally arranged circuit board 10 The front end of the surface 10S. The female connector 40 is fitted to the board connector 20 , and the female connector 40 is attached to the end portion of the wire harness 43 .

The circuit board 10 is horizontally arranged in a state of being accommodated in a block diagram (not shown). As shown in FIG. 3, the area|region near the front-end|tip edge 10F among the upper surface 10S of the circuit board 10 becomes the fixing area 11 for mounting the connector 20 for mounting boards. On the upper surface 10S of the circuit board 10 , a conductor pattern (not shown) is formed by printing in a region rearward of the fixing region 11 , and a region adjacent to the fixing region 11 of the conductor pattern is formed in a vertical direction (plate thickness direction). The plurality of through holes 12 of the circuit substrate 10 are penetrated. The front end edge 10F of the circuit board 10 extends linearly in the left-right direction over its entire width, and the front end edge 10F of the circuit board 10 is not formed with irregular parts such as recesses and protrusions.

The board connector 20 includes a connector housing 21 made of synthetic resin and a plurality of male terminal fittings 30 . The connector housing 21 is a single member including a wall-shaped terminal holding portion 22 substantially at right angles to the upper surface 10S of the circuit board 10 , and a cover portion 23 cantilevered forward from the terminal holding portion 22 . The terminal holding portion 22 is formed with a plurality of press-fit holes 24 penetrating in the front-rear direction. A pair of right and left projection-shaped mounting portions 25 are formed at the lower end portions of the left and right outer side surfaces of the terminal holding portion 22 .

The cover portion 23 includes an upper wall portion 23U extending horizontally forward from the upper edge portion 22U of the substantially square outer peripheral edges of the terminal holding portion 22, and a pair of left and right side wall portions 23S having a flat plate shape extending from the upper edge portion 22U to the front. The left and right side edge parts 22S of the outer peripheral edge of the terminal holding part 22 extend forward; and the connecting part 23L. The cover portion 23 extends forward in a cantilever shape only from the upper edge portion 22U and the left and right side edge portions 22S of the outer peripheral edge of the terminal holding portion 22 , and does not directly contact the lower edge portion of the outer peripheral edge of the terminal holding portion 22 . connected to the ground.

The left and right side edges of the upper wall portion 23U and the upper end edges of the left and right both side wall portions 23S are connected to each other at a substantially right angle in a front view. The formation area of the upper wall portion 23U in the front-rear direction and the formation area of the left and right side wall portions 23S are in the same range. In the up-down direction (height direction), the lower end surfaces of the left and right side wall portions 23S and the lower end surfaces of the terminal holding portions 22 are located at the same height. A guide surface 26 which becomes an upward slope toward the front is formed on the front end edge of the lower surface of the upper wall portion 23U. Guide surfaces 26 that are inclined forwardly to spread out to the left and right are also formed at the front end edge portions of the inner surfaces of the left and right side wall portions 23S.

The connection part 23L has a flat plate shape that is long in the left-right direction and is substantially parallel to the upper wall part 23U, and connects the front end parts of the lower edge parts of the left and right side wall parts 23S to each other. The left and right end edges of the connection portion 23L are connected to the lower end edges of the left and right both side wall portions 23S at a substantially right angle. The opening of the front end of the cover part 23 has a window shape connected by the upper wall part 23U, the left and right side wall parts 23S, and the connection part 23L over the entire circumference of the opening edge part. Therefore, at the front end portion of the cover portion 23, the lower end side regions of the left and right side wall portions 23S cannot be deformed so as to expand or contract.

The formation range of the connection part 23L in the front-rear direction is only a region from the front end of the cover part 23 to a position forward of the center of the front-rear direction of the cover part 23 . A region of the lower surface of the cover part 23 from the front surface of the terminal holding part 22 to the rear end of the connection part 23L is a bottom surface opening 27 that communicates the inner space of the cover part 23 to the outside and downward of the board connector 20 . The bottom surface opening portion 27 is opened in a substantially square shape over the entire width of the cover portion 23 .

In the up-down direction, the upper surface of the connection part 23L is located in substantially the same position as the lower end surface of the terminal holding part 22 and the lower end surfaces of the left and right side wall parts 23S. The lower surface of the connection portion 23L is positioned below the lower end edges of the left and right side wall portions 23S and the lower surface of the terminal holding portion 22 . That is, the connection part 23L protrudes downward from the lower end surface of the side wall part 23S by the thickness dimension of the connection part 23L. Moreover, the guide surface 26 which becomes a downward slope toward the front is formed in the front-end|tip edge part of the upper surface of the connection part 23L.

The male terminal fitting 30 is a terminal fitting formed into a predetermined shape by subjecting an elongated metal material to a bending process. The male terminal fitting 30 has a tab-shaped connecting portion 31 extending linearly in the front-rear direction, and a leg portion 32 extending downward at a substantially right angle from the rear end of the tab-shaped connecting portion 31 . The lower end portion of the leg portion 32 becomes the board connecting portion 33 . The male terminal fitting 30 is attached to the connector housing 21 by inserting the tab-shaped connecting portion 31 through the press-fit hole 24 from the rear of the terminal holding portion 22 .

The front end side region of the tab-shaped connection portion 31 is accommodated in the cover portion 23 . The front end of the tab-shaped connection portion 31 is positioned rearward of the rear end of the connection portion 23L. The entirety of the leg portion 32 is arranged rearward of the terminal holding portion 22 and is exposed to the outside of the connector housing 21 . The board connection part 33 of the leg part 32 penetrates the through-hole 12, and is connected to the conductor pattern of the circuit board 10 by soldering.

The board connector 20 is mounted on the circuit board 10 in a state where the connector housing 21 is placed on the upper surface 10S of the circuit board 10 . More specifically, by bringing the lower end surface of the terminal holding portion 22 and the lower end surfaces of the left and right side wall portions 23S into surface contact with the upper surface 10S of the circuit board 10 , the small screws (omitted) that penetrate through the mounting portion 25 are brought into contact with each other. The connector housing 21 (the terminal holding portion 22 and the cover portion 23 ) is fixed to the upper surface 10S of the circuit board 10 by screwing it into the circuit board 10 .

In addition, the front end portion of the cover portion 23 protrudes slightly forward from the front end edge 10F of the circuit board 10 . The protruding amount of the cover portion 23 is the same as or slightly larger than the front-rear dimension of the connection portion 23L. Thereby, the rear surface of the connection part 23L is located in the position which contacts the front-end|tip edge 10F (front-end surface) of the circuit board 10 from the front, or opposes with a slight gap.

The female-side connector 40 includes a block-shaped terminal accommodating member 41 made of synthetic resin, and a plurality of female terminal fittings 42 accommodated in the terminal accommodating member 41 . The plurality of female terminal fittings 42 are individually connected to the end portions of the plurality of electric wires 44 constituting the wire harness 43 , and the electric wires 44 are led out from the terminal accommodating member 41 to the back side (the front side of the board connector 20 ).

The female connector 40 is fitted into the board connector 20 by being fitted into the cover portion 23 from the front of the cavity. At the start of fitting, even if the female connector 40 is displaced vertically and horizontally with respect to the cover portion 23 (board connector 20 ), the front outer peripheral edge portion of the female connector 40 abuts on the guide surface 26 of the cover portion 23 . . Accordingly, the inclination of the guide surface 26 can correct the misalignment of the female connector 40 along with the fitting of the female connector 40 , so that the work of fitting the female connector 40 into the cover portion 23 is unlikely to be hindered.

When the female connector 40 starts to be fitted into the cover portion 23, the lower surface of the female connector 40 is slidably connected to the upper surface of the connecting portion 23L. At this time, since the upper surface of the connecting portion 23L is located at substantially the same height as the upper surface 10S of the circuit board 10 or a position slightly higher than that, the front lower edge of the female connector 40 cannot be connected to the front edge of the circuit board 10 10F interference. When the female side connector 40 reaches the regular fitting position in the cover portion 23, the fitting of the board connector 20 and the female side connector 40 is completed, and the female terminal fittings 42 are externally fitted on the front end portion of the tab-shaped connection portion 31. The female terminal fittings 42 and the male terminal fittings 30 are electrically connected to each other.

As described above, the connection structure of the first embodiment includes the circuit board 10 , the connector housing 21 mounted on the circuit board 10 , and the plurality of male terminal parts 30 mounted on the connector housing 21 . The connector housing 21 has: a terminal holding part 22 fixed to the upper surface 10S of the circuit board 10; A form in which the edge portion 22S extends forward. The male terminal fitting 30 is held in the terminal holding portion 22 in a penetrating state, and has a board connecting portion 33 that is connected to the circuit board 10 behind the terminal holding portion 22 , and a tab-shaped connecting portion 31 that is housed in the cover portion 23 . , connected to the female terminal part 42.

In the connection structure and board connector 20 of the first embodiment, a region of the lower surface of the cover portion 23 facing the upper surface 10S of the circuit board 10 is opened as the bottom surface opening portion 27 . At the bottom surface opening portion 27 , the upper surface 10S of the circuit board 10 directly faces the inner space of the cover portion 23 . That is, the cover portion 23 does not have a lower wall portion overlapping the upper surface 10S of the circuit board 10 . Therefore, it is possible to reduce the thickness of the lower wall portion of the board connector 20 .

Moreover, the height of the tab-shaped connection part 31 with respect to the upper surface 10S of the circuit board 10 is reduced by the thickness reduction of the connector 20 for boards. Thereby, the path length (height difference) of the circuit between the female terminal fittings 42 of the female connector 40 fitted into the cover portion 23 and the conductor pattern of the circuit board 10 is shortened, so that the transmission performance is excellent.

Moreover, the cover part 23 is formed with the connection part 23L which connects the area|region ahead of the terminal holding part 22 among the lower edge parts of a pair of left and right side wall parts 23S. By connecting the left and right side wall portions 23S by the connecting portion 23L, the strength of the cover portion 23 is improved, and the left and right both side wall portions 23S can be prevented from being improperly deformed in the left-right direction. Further, since the connecting portion 23L is disposed at the front end of the cover portion 23, when the female connector 40 starts to be fitted to the cover portion 23, the lower end portion of the female connector 40 directly abuts the connecting portion 23L. As a result, the female connector 40 can be positioned vertically with respect to the board connector 20 when the female connector 40 and the cover portion 23 start to be fitted together.

Moreover, when the connection part 23L is arrange|positioned behind the front-end|tip edge 10F of the circuit board 10, it is necessary to form a notch part in the circuit board 10 for avoiding interference with the connection part 23L. However, in the first embodiment, since the connecting portion 23L is disposed in the front region of the front end edge 10F of the circuit board 10 , a notch for avoiding interference with the connecting portion 23L may not be formed on the circuit board 10 .

Moreover, the connection part 23L is arrange|positioned so that it may come into contact with the front-end|tip edge 10F of the circuit board 10, or it may oppose closely. According to this configuration, when the work of attaching the board connector 20 to the circuit board 10 is performed, the connector housing 21 can be positioned relative to the circuit board 10 as long as the connecting portion 23L is brought into contact with the front end edge 10F of the circuit board 10 . Positioned in the front-to-rear direction.

<Example 2>

Next, a second embodiment of the present invention will be described with reference to FIGS. 8 to 11 . The connection structure of the board connector 50 and the circuit board 10 and the board connector 50 of the second embodiment is that the cover part 53 of the connector housing 51 constituting the board connector 50 is different from that of the first embodiment described above. structure. The other structures are the same as those of the above-described first embodiment, and therefore the same reference numerals are attached to the same structures, and the description of the structures, functions, and effects is omitted.

The board connector 50 of the second embodiment is configured by attaching a plurality of male terminal fittings 30 to a connector housing 51 . Since the male terminal fitting 30 is the same as that of the first embodiment, the description thereof will be omitted. The connector housing 51 is a single member including the terminal holding portion 22 and a cover portion 53 extending forward from the terminal holding portion 22 in a cantilever shape.

The cover portion 53 includes an upper wall portion 53U extending horizontally forward from the upper edge portion 22U of the substantially square outer peripheral edges of the terminal holding portion 22, and a pair of left and right side wall portions 53S having a flat plate shape. It extends forward from the left and right side edge portions 22S of the outer peripheral edge of the terminal holding portion 22 . The cover portion 53 extends forward in a cantilever shape only from the upper edge portion 22U and the left and right side edge portions 22S of the outer peripheral edge of the terminal holding portion 22 , and is not directly connected to the lower edge portion of the outer peripheral edge of the terminal holding portion 22 . connected to the ground.

A portion corresponding to the connecting portion 23L of the first embodiment is not formed in the cover portion 53 of the second embodiment. Therefore, the lower surface of the cover part 53 becomes a bottom surface opening part 54 which communicates the inner space of the cover part 53 to the outside and downward of the board connector 50 over the entire area. The bottom surface opening portion 54 communicates with the opening at the front end of the cover portion 53 .

<Other Examples>

The present invention is not limited to the embodiments explained by the above description and drawings, and the following embodiments, for example, are also included in the technical scope of the present invention.

(1) In the above-mentioned Embodiment 1, the connection portion is arranged at the front end portion of the cover portion, but the connection portion may be arranged in a region rearward of the front end of the cover portion.

(2) In the above-described Embodiment 1, the connecting portion is disposed forward of the front end edge of the circuit board, but the connecting portion may be accommodated in a notch portion formed in the circuit board.

(3) In the above-mentioned first embodiment, the connecting portion is arranged so as to be in contact with or close to the front end edge of the circuit board, but the connecting portion may be arranged at a position that is greatly separated from the front end edge of the circuit board. .

(4) In the above-mentioned Embodiment 1, the tapered guide surface is formed in the connecting portion, but the connecting portion may not have a guide surface.

(5) In the above-mentioned first and second embodiments, the left and right side wall portions of the cover portion and the left and right outer side surfaces of the female side connector may be formed with a guide for positioning the female side connector with respect to the cover portion in the up-down direction. Ribs and grooves.

Description of reference numerals

10: Circuit board

10F: Front edge of circuit board

10S: The upper surface of the circuit board

20, 50: Connector for board

21, 51: Connector housing

22: Terminal holding part

22U: The upper edge of the terminal holding part

22S: Side edge of terminal holding member

23, 53: Cover part

23L: Connection part

23S, 53S: side wall

30: Male terminal parts

31: Tab-shaped connecting part

33: Board connection part

Claims (7)

1. A connector for a substrate is provided with a connector housing and a plurality of male terminal members,

the connector housing has: a terminal holding portion fixed to an upper surface of the circuit board; and a cover portion extending forward only from an upper edge portion and both left and right side edge portions of an outer peripheral edge portion of the terminal holding portion,

the plurality of male terminal parts are held in the terminal holding portion in a penetrating state, the substrate connection portions of the plurality of male terminal parts are connected to the circuit substrate behind the terminal holding portion, and the tab-shaped connection portions of the plurality of male terminal parts are housed in the hood portion.

2. The connector for a substrate according to claim 1,

the substrate connector includes a connecting portion that connects regions of lower edge portions of a pair of left and right side wall portions constituting the cover portion, which are located forward of the terminal holding portion.

3. The connector for a substrate according to claim 2,

the connecting portion is disposed at a distal end portion of the cover portion.

4. A connection structure of a circuit board and a connector for a board, comprising a circuit board, a connector housing and a plurality of male terminal parts,

the connector housing has: a terminal holding portion fixed to an upper surface of the circuit board; and a cover portion extending forward only from an upper edge portion and both left and right side edge portions of an outer peripheral edge portion of the terminal holding portion,

the plurality of male terminal parts are held in the terminal holding portion in a penetrating state, the substrate connection portions of the plurality of male terminal parts are connected to the circuit substrate behind the terminal holding portion, and the tab-shaped connection portions of the plurality of male terminal parts are housed in the hood portion.

5. The structure of claim 4, wherein the first and second connectors are provided on the circuit board,

the connector includes a connecting portion that connects regions of lower edge portions of a pair of left and right side wall portions constituting the cover portion, the regions being located forward of the terminal holding portion.

6. The structure of claim 5, wherein the first and second connectors are provided on the circuit board,

the connecting portion is disposed in a region forward of a front end edge of the circuit board.

7. The structure of claim 6, wherein the first and second connectors are provided on the circuit board,

the connecting portion is disposed so as to abut against or closely face a front end edge of the circuit board from a front side of the front end edge.

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